CN1896645A - No.2-type opening absorbing water pump - Google Patents

No.2-type opening absorbing water pump Download PDF

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Publication number
CN1896645A
CN1896645A CN 200610045049 CN200610045049A CN1896645A CN 1896645 A CN1896645 A CN 1896645A CN 200610045049 CN200610045049 CN 200610045049 CN 200610045049 A CN200610045049 A CN 200610045049A CN 1896645 A CN1896645 A CN 1896645A
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absorption
absorber
heat pump
generator
heat
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CN 200610045049
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李华玉
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李华玉
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Abstract

This invention provides a kind of open-type the second group absorption heat pump, which belongs to the low temperature waste heat-reusing field of heat supply project. Its single-stage heat pump includes absorber, generator and condenser. The two-stage and multi-stage heat pump has additional absorb-evaporator; one part of waste heat steam is directly absorbed into absorber or absorb-evaporator and used as refrigerant steam for solution absorbing process, the other part diverts and completes the heating process of dilute solution through generator. The waste heat steam turns to condensed water after releasing heat. The condensed water directly returns to the original position after applying pressure-by-pressure increasing pump or after absorbing heat and increasing temperature in absorber. The absorber absorbs steam or refrigerant steam. It releases heat and completes heating to the condensed water or outer fluid. This invention simplifies the equipment and process. It reduces the heat transferring process and improves heat pump technological parameter.

Description

Open type second class absorption heat pump
Technical field
The invention belongs to low temperature exhaust heat and utilize energy-saving equipment and field of engineering technology.
Background technology
Adopting the absorption heat pump technology to carry out UTILIZATION OF VESIDUAL HEAT IN is effective means, has reasonable energy-saving and environmental protection and economic benefit.In energy conservation, play in the absorption heat pump of comparatively key effect, second class absorption heat pump is have special status a kind of, and it generally is made up of generator, condenser, evaporimeter and absorber, and working medium is finished heat pump cycle in heat pump inside; In the available occasion that has surplus heat, no matter which type of characteristic waste heat is, all need to make its evaporation by the refrigerant medium of evaporimeter heating heat pump inside, refrigerant medium after the evaporation enters absorber again and is absorbed by the concentrated solution from generator, so just have a heat transfer link (to a heat transfer resistance should be arranged), heat pump correspondingly needs these parts of evaporimeter.The existence of heat transfer link has influenced the lifting amplitude of waste heat supply temperature, and this is disadvantageous to the occasion of using second class absorption heat pump; Evaporimeter is set, has increased the investment of device, also increased mobile link.
There is a part of special occasions of a large amount of low temperature exhaust heats, as steam power circulating apparatus, waste heat is to exist with the steam of low temperature, low pressure (as steam turbine outlet exhaust steam) state, quantity is big and temperature is low, adopt traditional enclosed second class absorption heat pump to come these waste heats are used, more heat transmission link is very disadvantageous to the lifting of waste heat supply temperature, and this makes that also equipment is huge and invests increase.
Summary of the invention
Technical problem to be solved by this invention is second class absorption heat pump (such as being working medium with the lithium bromide water solution) that a kind of open type will be provided, it has save the evaporimeter in the conventional heat pump, directly introduces low temperature from other device, the low pressure afterheat steam waste heat as heat pump; Simplified apparatus structure and heat transfer link are improved the heat pump technology parameter.
For solving the problems of the technologies described above, basic design of the present invention is: on the basis of the traditional enclosed second class absorption heat pump system, save its evaporimeter, directly low temperature, the low pressure afterheat steam of introducing from other device is the waste heat of heat pump, this steam becomes its working media after entering heat pump simultaneously, utilize waste heat in the most direct mode, afterheat steam has been born the effect of cryogen working media in the heat pump simultaneously; Waste heat after temperature gets a promotion can be used for the heating (waste heat self heating type) of waste heat medium self, also can heat (externally heat supply type) to outside user media.
As the first kind of technical scheme that realizes that the present invention conceives substantially, it is single-stage open type second class absorption heat pump of waste heat self heating type, it mainly comprises absorber, generator, condenser, some circulating pumps, control valve, header tank (option) and solution heat exchanger (option), process cryogen liquid pump between condenser and the absorber, header tank and pressure-raising pump are communicated with the cooling medium pipeline, be communicated with the solution pipeline by solution pump between absorber and the generator, the refrigerant vapour that generator produces enters condenser by pipeline, entered the cooling medium cooling of condenser, absorber leaves nose end respectively in order to being connected afterheat steam with generator.
As the second kind of technical scheme that realizes that the present invention conceives substantially, be two-stage second class absorption heat pump of waste heat self heating type, it mainly comprises absorber, generator, condenser, absorption-evaporimeter, control valve, some circulating pumps, header tank (option) and solution heat exchanger (option).Be communicated with the solution pipeline by solution pump between generator and the absorber, the refrigerant vapour that generator produces enters condenser by pipeline, and the cooling medium that is entered condenser cools off; The solution of absorber is connected to absorption-evaporimeter with pipeline, and absorption-evaporimeter leaves nose end in order to connecting afterheat steam; Refrigerant vapour becomes cryogen liquid after the condensation in condenser, be connected to the heat-exchanging tube bundle in absorption-evaporimeter and be heated gasification through a cryogenic fluid pump part, become refrigerant vapour and enter absorber, another part enters the condensed water of header tank and generator and is together squeezed into absorber by the pressure-raising pump, gets back to former afterheat steam after heat absorption heats up the place is provided; Weak solution in the absorption-evaporimeter is connected to generator after the absorption afterheat steam is further thinning, finishes the generating process of refrigerant vapour under the waste heat heating, becomes concentrated solution and enters absorber through the solution pump connection.
As the third technical scheme that realizes basic design of the present invention is second class absorption heat pump more than three grades or three grades of waste heat self heating type, and it mainly comprises absorber, generator, condenser, absorption-evaporimeter, control valve, some circulating pumps, header tank (option) and solution heat exchanger (option).Be communicated with the solution pipeline by solution pump between generator and the absorber, the refrigerant vapour that generator produces enters condenser by pipeline, and the cooling medium that is entered condenser cools off; On the solution pipeline between absorber and the generator, design absorption-evaporimeter more than two or two, the solution of absorber is connected to high pressure absorption-evaporimeter with pipeline, the taphole of high pressure absorption-evaporimeter connects to connect behind the low pressure absorptions-evaporimeter again and enters generator, and low pressure absorptions-evaporimeter leaves nose end and prepares against the connection afterheat steam; Refrigerant vapour becomes cryogen liquid after the condensation in condenser, be connected to the heat-exchanging tube bundle in absorption-evaporimeter and be heated gasification through a cryogenic fluid pump part, become refrigerant vapour and enter absorber, another part enters the condensed water of header tank and generator and is together squeezed into absorber by the pressure-raising pump, gets back to former afterheat steam after heat absorption heats up the place is provided; Weak solution in the low pressure absorption-evaporimeter is connected to generator after the absorption afterheat steam is further thinning, finishes the generating process of refrigerant vapour under the waste heat heating, becomes concentrated solution and enters absorber through the solution pump connection.Compare with the two levels of thermal pumping system, heat pump is provided with two or more absorption-evaporimeters more than three grades or three grades, and other structure is identical in principle with flow process.
Above-mentioned first kind of technical scheme can be improved to the external heat supply type single-stage open type second class absorption heat pump system, at this moment, afterheat steam enters generator and absorber respectively, and outside medium to be heated enters absorber and is heated, and other parts and annexation are all identical with first kind of technical scheme.
Above-mentioned second kind of technical scheme can be improved to the external heat supply type two-stage open type second class absorption heat pump system, at this moment, afterheat steam enters generator and absorption-evaporimeter respectively, outside medium to be heated enters absorber and is heated, coagulate water and coagulating after water converges from the part of condenser from generator, through the pressurization of pressure-raising pump, directly to get back to afterheat steam and produce system, other parts and annexation are all identical with second kind of technical scheme.
Above-mentioned the third technical scheme can be improved to external heat supply type open type second class absorption heat pump system more than three grades or three grades, at this moment, afterheat steam enters generator and low-pressure stage absorption-evaporimeter respectively, outside medium to be heated enters absorber and is heated, coagulate water and coagulating after water converges from the part of condenser from generator, through the pressurization of pressure-raising pump, directly to get back to afterheat steam and produce system, other parts and annexation are all identical with the third technical scheme.
When utilizing the afterheat steam of low temperature, low pressure, traditional enclosed second class absorption heat pump exists not enough.In conjunction with low temperature, low pressure afterheat steam characteristics, utilization is working media representative, solute does not have the volatility characteristics under application conditions with the lithium bromide water solution, adopt technique scheme, flow process is more reasonable, has directly utilized afterheat steam, has simplified device structure, reduced the heat transfer link, improved the heat pump technology parameter, this will expand the application market of second class absorption heat pump, bring better energy-saving and environmental protection and economic benefit.
Description of drawings
Fig. 1 is according to provided by the present invention, waste heat self heating type single-stage open type second class absorption heat pump system architecture and the schematic flow sheet.
Fig. 2 is according to provided by the present invention, waste heat self heating type two-stage open type second class absorption heat pump system architecture and the schematic flow sheet.
Fig. 3 is according to provided by the present invention, three grades of open types of waste heat self heating type, second class absorption heat pump system architecture and the schematic flow sheet, and it is also as the representative of multi-stage heat pump.
Fig. 4 is according to provided by the present invention, externally heat supply type single-stage open type second class absorption heat pump system architecture and the schematic flow sheet.
Fig. 5 is according to provided by the present invention, externally heat supply type two-stage open type second class absorption heat pump system architecture and the schematic flow sheet.
Fig. 6 is according to provided by the present invention, external three grades of open types of heat supply type, second class absorption heat pump system architecture and the schematic flow sheet, and it is also as the representative of multi-stage heat pump.
Among the figure, 1-absorber, 2-generator, the 3-condenser, the 4-solution heat exchanger, 5-control valve (option), 6-solution pump, 7-cryogen liquid pump, 8-(confluxing) case that catchments, 9-coagulates the water booster, 10-absorption-evaporimeter (or high pressure absorption evaporimeter), 11-low pressure absorption-evaporimeter, 12,13,14, the 15-control valve.
The specific embodiment
Describe the present invention in detail below in conjunction with drawings and Examples.
Figure 1 shows that exhaust steam enters the structure and the flow process of the single-stage open type second class absorption heat pump system of generator and absorber, waste heat self heating type respectively.On the structure, such heat pump is mainly connected to form by absorber 1, generator 2, condenser 3, has saved the evaporimeter in the enclosed second class absorption heat pump system.An afterheat steam part enters generator 2, is used for the weak solution from absorber is heated, produces refrigerant vapour; Some afterheat steam enters absorber 1 in addition, is absorbed by the concentrated solution from generator 2.From the solution of absorber 1, enter generator 2, in generator 2, heated by afterheat steam, discharge refrigerant vapour and enter condenser 3 medium that is cooled and be condensed into liquid state.Pass through cryogen liquid pump 7 pressure-raisings from the water that coagulates in the condenser 3, with the water that coagulates from generator 2, all in (compiling) case 8 that catchments or two-way pipeline joining place directly converge, after pressure-raising pump 9 pressurization, enter absorber 1, get back to afterheat steam after heat absorption heats up and produce system.Enter generator 2 after absorber 1 interior solution absorption refrigerant vapour is thinning, under the waste heat heating, finish the production process of refrigerant vapour.Concentrated solution enters absorber 1 again after solution pump 6 is squeezed into solution heat exchanger 4 heat exchange, the heat production in the absorption afterheat steam process is used for the condensed water after direct heating is condensed from afterheat steam.Cooling medium is into and out of condenser 3, finishes the condensation from the refrigerant vapour of generator 2, and structure and flow process are with traditional identical herein.In this heat pump, afterheat steam enters absorber 1 and generator 2 respectively, with finish the condensed water that generates after the heat release from the cooling medium of cooling system, the solution, the afterheat steam that work in absorber 1 and generator 2, and relevant various device, finish following workflow jointly:
1. the afterheat steam flow process---afterheat steam enters absorber 1 and generator 2 respectively, and the steam that enters absorber 1 is absorbed by the concentrated solution from generator, the water with fixed attention of heating after pressure-raising pump 9 boosts; Enter the weak solution of the afterheat steam heating of generator 2 from absorber 1, condense back and cryogen from condenser 3 coagulate water and together enter absorber 1 finish the process of being heated after pressure-raising pump 9 boosts.
2. cooling medium flow process---cooling water is into and out of condenser 3, finishes the condensation from the refrigerant vapour of generator.
3. the refrigerant vapour that refrigerant vapour flow process---weak solution in the generator 2 produces under the waste heat heating enters condenser 3 medium that is cooled and is condensed into refrigerant medium, sends into header tank 8 by cryogen liquid pump 7.
4. solution flow process---from being sent into solution heat exchanger 4 heat absorptions by solution pump 6 after, the concentrated solution of generator 2 outlets enters absorber 1, absorption becomes weak solution from the afterheat steam of outside, weak solution enters generator 2 after solution heat exchanger 4 coolings, being emitted refrigerant vapour by the afterheat steam heating becomes concentrated solution, squeezes into the circulation that absorber 1 is finished solution through solution pump 6 again.
Shown in Figure 2 is afterheat steam enters respectively absorption-evaporimeter and generator, heating afterheat steam self coagulates the structure and the flow process of self heating type two-stage open type second class absorption heat pump system of water, it is compared with heat pump shown in Figure 1, just on the solution pipeline between absorber 1 and the generator 2, set up 1 absorption-evaporimeter 10, coagulate water from the part of condenser 3 and enter absorption-evaporimeter 10, enter absorber 1 after being heated vaporization; Coagulate water from another part of condenser 3 and directly converge, after boosting, enter absorber 1 and be heated with the water that coagulates from generator 2.A main difference is that its steam that enters absorber comes self-absorption-evaporimeter.Other parts and annexation thereof are all identical with heat pump shown in Figure 1.
Figure 3 shows that afterheat steam enters three grades of open types of self heating type, second class absorption heat pump system architecture and the flow process that low pressure absorption-evaporimeter and generator, heating afterheat steam self coagulate water respectively, it is compared with heat pump shown in Figure 2, different just on the solution pipeline between absorption-evaporimeter 10 and the generator 2, set up 1 low-pressure stage absorption-evaporimeter 11, coagulate water from the part of condenser 3 and enter absorption-evaporimeter 10 and low-pressure stage absorption-evaporimeter 11 respectively, its part enters absorber 1 after being heated vaporization; Coagulate water from another part of condenser 3 and directly converge, after boosting, enter absorber 1 and be heated with the water that coagulates from generator 2.Main difference is that it has increased by 1 low-pressure stage absorption-evaporimeter 11, and afterheat steam enters low-pressure stage absorption-evaporimeter 11.Other parts and annexation thereof are all identical with heat pump shown in Figure 2.The structure and the flow process of the open type second class absorption heat pump system more than three grades, as long as correspondingly set up low-pressure stage absorption-evaporimeter again on three grades basis, the total quantity of set absorption-evaporimeter subtracts 1 for equaling progression.
Figure 4 shows that exhaust steam enters the structure and the flow process of the external heat supply type single-stage open type second class absorption heat pump system of generator and absorber, heating external agency respectively, compare with heat pump shown in Figure 1, the fluid that different is enters absorber 1 is an external agency, and remaining part and annexation thereof are all identical.
Figure 5 shows that exhaust steam enters the structure and the flow process of the external heat supply type two-stage open type second class absorption heat pump system of generator and absorption-evaporimeter, heating external agency respectively, compare with heat pump shown in Figure 2, the fluid that different is enters absorber is an external agency, and remaining part and annexation thereof are all identical.
Figure 6 shows that exhaust steam enters the structure and the flow process of three grades of open type second class absorption heat pump systems of external heat supply type of generator and low pressure absorption-evaporimeter, heating external agency respectively, it is also as the representative of multi-stage heat pump, compare with heat pump shown in Figure 3, except the fluid that enters absorber 1 is the external agency, the two does not have other difference.
Open type second class absorption heat pump proposed by the invention is compared with traditional enclosed second class absorption heat pump, and low temperature, the available occasion of low-pressure steam are being arranged, and has following effect and advantage:
1. process simplification improves the equipment mobile performance.
2. equipment is simplified largely, has reduced equipment and construction investment.
3. corresponding the obtaining of control system simplified, and the security of heating system also obtains corresponding raising.
4. the link of conducting heat reduces, and the temperature that waste heat gets a promotion is higher; Maybe can utilize the more waste heat of low temperature; Or the temperature of concentrated solution in the reduction generator, avoid or reduce the corrosion that solution herein may cause equipment; These have all effectively improved the processing performance of heat pump, have expanded the application scenario of second class absorption heat pump.

Claims (8)

1. open type second class absorption heat pump mainly comprises absorber, generator, condenser or absorption-evaporimeter, no longer includes the evaporimeter of enclosed second class absorption heat pump; Be communicated with the solution pipeline by solution pump (6) between absorber (1) and the generator (2), the refrigerant vapour that generator (2) produces enters condenser (3) by pipeline or passage, entered the cooling medium cooling of condenser (3), enter after water compiles from coagulating of condenser (3) and generator (2) and to get back to the afterheat steam source or directly to get back to the afterheat steam source after absorber (1) heat absorption heats up, it is characterized in that: described absorber (1), low pressure absorption-evaporimeter (11) and generator (2) leave the afterheat steam entry port respectively, directly introduce low temperature from other device, the low pressure afterheat steam is as the waste heat of heat pump, this steam becomes its working media after entering heat pump, utilize waste heat in the most direct mode, afterheat steam has been born the effect of cryogen working media in the heat pump simultaneously; Waste heat after temperature gets a promotion can be used for the heating of waste heat medium self, also can heat outside user media.
2. open type second class absorption heat pump according to claim 1, it is characterized in that: the afterheat steam pipeline connects absorber (1) and generator (2) respectively, solution from absorber (1) directly inserts generator (2), get back to the afterheat steam source from coagulating of generator (2) and condenser (3) after water all converges back access absorber (1) heat absorption, constitute single-stage open type second class absorption heat pump of waste heat self heating type.
3. open type second class absorption heat pump according to claim 1, it is characterized in that: the solution pipeline is provided with absorption-evaporimeter (10) between absorber (1) and the generator (2), the afterheat steam pipeline connects absorption-evaporimeter (10) and generator (2) respectively, coagulate from the part of condenser (3) and to be connected to absorber (1) after water is connected to absorption-evaporimeter (10), constitute two-stage second class absorption heat pump of waste heat self heating type.
4. open type second class absorption heat pump according to claim 1, it is characterized in that: the solution pipeline between absorber (1) and the generator (2) is provided with two absorption-evaporimeters (10,11), the afterheat steam pipeline connects the absorption-evaporimeter (11) and the generator (2) of relatively low pressure level respectively, coagulate water from the part of condenser (3) and be connected to two absorption-evaporimeters respectively, enter low-pressure stage absorption-evaporimeter (11) coagulate the absorption-evaporimeter (10) that enters the relatively high pressure level after the water heat absorption again; Be connected to the relatively high pressure level absorption-evaporimeter (10) coagulate the water heat absorption after be connected to absorber (1), constitute three grade of second class absorption heat pump of waste heat self heating type, it is also as the representative of multilevel open type second class absorption heat pump.
5. open type second class absorption heat pump according to claim 2, it is characterized in that: describedly directly get back to the afterheat steam source after water all converges from coagulating of generator (2) and condenser (3), outside medium to be heated is connected to the import and export pipeline of absorber (1), constitutes external heat supply type single-stage open type second class absorption heat pump.
6. open type second class absorption heat pump according to claim 3, it is characterized in that: described part from condenser (3) is coagulated water and is directly got back to the afterheat steam source from coagulating of generator (2) after water converges, outside heated medium is connected to the import and export pipeline of absorber (1), constitutes two-stage second class absorption heat pump of external heat supply type.
7. open type second class absorption heat pump according to claim 4, it is characterized in that: described part from condenser (3) is coagulated water and is directly got back to the afterheat steam source from coagulating of generator (2) after water converges, outside heated medium is connected to the import and export pipeline of absorber (1), constitutes three grade of second class absorption heat pump of external heat supply type.
8. according to described open type second class absorption heat pump of claim 1 to 7, it is characterized in that as the solute in the solution of internal work medium it being under condition of work, not have volatile material.
CN 200610045049 2006-06-16 2006-06-16 No.2-type opening absorbing water pump Pending CN1896645A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101788141A (en) * 2010-03-05 2010-07-28 王利军 Absorption type heat regenerator and application thereof in regenerative circulation system of power plant
CN101806448A (en) * 2010-03-05 2010-08-18 王利军 Application of second type absorption type heat pump in heat exchange cycle system of power plant
CN101545693B (en) * 2007-08-27 2010-12-08 李华玉 Heterogeneous composite absorption type heat pump
CN105865067A (en) * 2015-04-13 2016-08-17 李华玉 Open-type bidirectional thermodynamic cycle and second-class thermally-driven compression heat pump
CN108050724A (en) * 2015-07-09 2018-05-18 荏原冷热系统(中国)有限公司 A kind of second-kind absorption-type heat pump

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101545693B (en) * 2007-08-27 2010-12-08 李华玉 Heterogeneous composite absorption type heat pump
CN101788141A (en) * 2010-03-05 2010-07-28 王利军 Absorption type heat regenerator and application thereof in regenerative circulation system of power plant
CN101806448A (en) * 2010-03-05 2010-08-18 王利军 Application of second type absorption type heat pump in heat exchange cycle system of power plant
CN101788141B (en) * 2010-03-05 2011-08-31 王利军 Application of absorption type heat regenerator in regenerative circulation system of power plant
CN101806448B (en) * 2010-03-05 2011-11-09 王利军 Application of second type absorption type heat pump in heat exchange cycle system of power plant
CN105865067A (en) * 2015-04-13 2016-08-17 李华玉 Open-type bidirectional thermodynamic cycle and second-class thermally-driven compression heat pump
CN105865067B (en) * 2015-04-13 2020-06-16 李华玉 Open type bidirectional thermodynamic cycle and second-class heat driving compression heat pump
CN108050724A (en) * 2015-07-09 2018-05-18 荏原冷热系统(中国)有限公司 A kind of second-kind absorption-type heat pump

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